Some callers may wish to redirect stderr to /dev/null in some
contexts, such as if they are executing a command only to get
the exit status and don't want users to see whatever output it
may produce as a side-effect of computing that exit status.
Signed-off-by: Shawn O. Pearce <spearce@xxxxxxxxxxx>
---
This series replaces my earlier single patch for git-fetch to bypass
copying objects from local alternates. It includes (I believe)
all comments made on the prior version.
run-command.c | 6 ++++--
run-command.h | 1 +
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/run-command.c b/run-command.c
index d99a6c4..476d00c 100644
--- a/run-command.c
+++ b/run-command.c
@@ -41,7 +41,7 @@ int start_command(struct child_process *cmd)
cmd->close_out = 1;
}
- need_err = cmd->err < 0;
+ need_err = !cmd->no_stderr && cmd->err < 0;
if (need_err) {
if (pipe(fderr) < 0) {
if (need_in)
@@ -87,7 +87,9 @@ int start_command(struct child_process *cmd)
close(cmd->out);
}
- if (need_err) {
+ if (cmd->no_stderr)
+ dup_devnull(2);
+ else if (need_err) {
dup2(fderr[1], 2);
close_pair(fderr);
}
diff --git a/run-command.h b/run-command.h
index 94e1e9d..1fc781d 100644
--- a/run-command.h
+++ b/run-command.h
@@ -23,6 +23,7 @@ struct child_process {
unsigned close_out:1;
unsigned no_stdin:1;
unsigned no_stdout:1;
+ unsigned no_stderr:1;
unsigned git_cmd:1; /* if this is to be git sub-command */
unsigned stdout_to_stderr:1;
};
--
1.5.3.5.1590.gfadfad
-
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